Abstract: An industrial truck has a multi-function lever for control of the movement of a load handling attachment (4) of the industrial truck. The multi-function lever has a handle element (12). The handle element (12) is essentially immobile and at least one sensor is associated with the handle element (12) for measurement of an actuation force that is exerted on the handle element (12) and/or of an actuation moment that is exerted on the handle element (12). The sensor is effectively connected with an electrical control device of the industrial truck. The control device is realized so that the speed of the movement of the load handling attachment (4) is set as a function of the magnitude of the actuation force and/or of the magnitude of the actuation moment.

Abstract: A fork lift truck has a chassis and a battery block located inside the chassis. The chassis has a lateral opening for the removal of the battery block essentially in the horizontal direction. The chassis has a beam (5) to which a bending load can be applied and which is located on the upper side of the opening in the chassis. The beam can have an at least approximately T-shaped section.

Abstract: A restraint system is provided for a mobile machine (1), in particular an industrial truck, with a driver's seat (2) and a safety belt (3). The restraint system has a variable-length mechanical connection (6) between a front part (4) of the roof that covers the driver's seat or the driver's cab and the safety belt (3). The variable-length mechanical connection (6) makes it easier for the operator to attach the safety belt (3). The operator will also attach the safety belt (3) because otherwise it will be difficult or impossible to use the control elements (5). The variable-length mechanical connection (6) simultaneously prevents bypassing of a device to detect whether the safety belt (3) is closed.

Abstract: The invention relates to an industrial truck with an on-board energy reservoir (1) and at least one drive system (2) supplied with energy from it. On the industrial truck there is a device (4) to display the remaining operating time.

Abstract: An industrial truck, such as a fork-lift truck, has an electrical drive system and an energy supply based on gaseous media. At least one pressure vessel for the storage of at least one gaseous medium is installed in a mounting device which can be easily replaced together with the pressure vessel in the lower portion of the industrial truck (5) between the axles (7). Devices necessary for the generation of electrical energy from the gaseous medium can be advantageously installed in the mounting device.

Abstract: A battery-operated vehicle, in particular to an industrial truck, includes an electronic control unit (2) and an on-board charging function. Instead of a separate charging unit, the invention teaches that the control unit (2) also regulates the charging function.

Abstract: A method for operating a fuel system for an internal combustion engine operated with fuel gas. The fuel system has at least one electrically actuated shutoff valve (4) and at least one electrically operated heating device (14, 16). The operating method includes: generating a signal to turn on the heating device (14, 16) when the internal combustion engine is turned on; determining a heating demand (?reference) of the fuel system when the heating device (14, 16) is turned on; and depending on the heating demand (?reference) of the fuel system, determining a delay time between the time the heating device (14, 16) is turned on and the time the shutoff valve (4) is opened. The heating demand (?reference) can be a function of a temperature (Tengine coolant) of the engine and/or a temperature (Thydraulic fluid) independent of the engine and/or the current (Iheating) flowing through the heating device.

Abstract: An industrial truck, such as a fork-lift truck, has an electrical drive system and an energy supply based on gaseous media. At least one pressure vessel for the storage of at least one gaseous medium is installed in a mounting device which can be easily replaced together with the pressure vessel in the lower portion of the industrial truck (5) between the axles (7). Devices necessary for the generation of electrical energy from the gaseous medium can be advantageously installed in the mounting device.

Abstract: A coupling for connecting hydraulic ducts has a female coupling (1) with a receptacle and a first locking face arranged around a longitudinal axis. A male coupling (2) forms a second locking face, arranged around the longitudinal axis. The male coupling (2) can be inserted in the direction of the longitudinal axis (4) through an opening into the receptacle (3). A holding element (9) has a ring (10) with several spring elements projecting from the ring (10). The spring elements (11) extend parallel to the longitudinal axis (4). Locking elements (12) are formed on the free ends of the spring elements (11). The spring elements (11) are, respectively, elastically deformable against a spring force radially out of a locking position into a releasing position. In the inserted condition of the male coupling (2), the first locking face (15) and the second locking (16) face one another.

Abstract: A hydraulic drive (1) has a position selection device (2) in communication with a control valve (3) which, as a function of the actuation of the position selection device (2), controls the connection of an actuating cylinder (8) with a hydraulic fluid source (5) and a reservoir (6). A correction device provides a synchronization between the position of the position selection device (2) and the position of the actuating cylinder (8). The correction device has a sliding valve means (15) which detects a reference range of the actuating cylinder (8) and an on-off valve means (16) effectively connected mechanically with the position selection device (2). The on-off valve means (16) is open when the position selection device (2) is in the reference range and is closed when the position selection device (2) is not in the reference range.

Abstract: A multifunction lever for an industrial truck has a handle element (12) mounted so that it can move on a base body (10), and a sensor (20) to detect and measure the movements of the handle element (12) relative to the base body (10). The handle element (12) can be moved relative to the base body (10) in rotation around at least two coordinate axes and in translation in the direction of at least one coordinate axis. The coordinate axes belong to a system of rectangular coordinates.

Abstract: The invention relates to a device and a method to ensure the steerability of an industrial truck that has a hydraulic steering system. The invention includes at least one gas generation cartridge (8) and a device (16) to activate the generation of the gas. The invention teaches that energy is available in an emergency for the hydraulic circuit of a hydraulic steering system. On the side of the gas generation cartridge (8), when there is a need to supply energy to the hydraulic circuit, pressure is increased which can then be transmitted to the hydraulic medium. The invention makes available an advantageous emergency power supply system for a hydraulic steering system of an industrial truck.

Abstract: A hydraulic steering device (1) has a steering angle transmitter (2) in communication with a steering valve (3) which, as a function of the actuation of the steering angle transmitter (2), controls the communication between a steering drive (11), e.g., a steering cylinder (12) with a hydraulic pressure source (5) and a reservoir (9), and a correction device (15). The correction device (15) provides synchronization of the position of the steering angle transmitter (2) with the position of the steering angle drive (11) when the steering drive (11) or steering angle transmitter (2) is in a reference range and the position of the steering angle transmitter (2) and/or of the steering drive (2) varies from the reference range.

Abstract: An industrial tow truck (1) includes an electrical traction drive system. At least one fuel cell unit (9) is used as the energy supply for the electrical traction drive system.

Abstract: A hydraulic drive (1) has a position selection device (2) in communication with a control valve (3) which, as a function of the actuation of the position selection device (2), controls the connection of an actuating cylinder (8) with a hydraulic fluid source (5) and a reservoir (6). A correction device provides a synchronization between the position of the position selection device (2) and the position of the actuating cylinder (8). The correction device has a sliding valve means (15) which detects a reference range of the actuating cylinder (8) and an on-off valve means (16) effectively connected mechanically with the position selection device (2). The on-off valve means (16) is open when the position selection device (2) is in the reference range and is closed when the position selection device (2) is not in the reference range.

Abstract: A mobile machine, in particular a fork lift truck, having a chassis and a cab located on the chassis. There are one or more pneumatic or hydropneumatic suspension elements to improve comfort and ride quality between the chassis and the cab.

Abstract: An industrial truck is provided with a direct current power supply and at least one electrical user (2), e.g., a lighting device located in a housing, wherein the power supply voltage of the power supply (3) is greater than the nominal voltage of the user (2). To connect the user (2) to the power supply, there is a voltage transformer (4) which is located inside the housing or in the immediate vicinity of the housing. The invention also relates to a voltage transformer which applies a power supply voltage to a user (2) in pulses, so that the power delivered to the user, as an average over time, does not exceed the nominal power of the user (2).

Abstract: An assembly having an electrical machine and a power electronics unit for use in a vehicle includes a housing part of the electrical machine connectable with a housing part of the power electronics unit at a seam between the two parts. Electrical pressure contacts are located in the vicinity of the seam between the two parts. Each pressure contact has one contact point located on the power electronics unit and one contact point located on the electrical machine. At least one contact point of a pressure contact is spring-loaded toward the other contact point of the same pressure contact.

Abstract: A mobile machine, in particular a fork lift truck, having a chassis and a cab located on the chassis. There are one or more pneumatic or hydropneumatic suspension elements to improve comfort and ride quality between the chassis and the cab.

Abstract: An industrial truck, in particular a fork lift truck, has a driver's seat that is oriented in the forward direction, at least one screen that is located in the vicinity of the driver's seat, a first camera pointing toward the rear of the industrial truck and at least one additional camera that is directed toward the rear. The first camera is provided to view a distant area and the additional camera is provided to view a near area behind the industrial truck. The image taken with the first camera and/or the image taken with the additional camera can be displayed on the screen. There are advantageously two additional cameras to view the near area.